Consider all the factors involved in a residential paint job as well as the level of ambition it takes to pull the whole thing off. Depending on certain circumstances and variables, you will certainly need to hire a professional. Think about what the job requires as well as the level of precision and attention to detail to do everything right. Also, consider the scale of the job. How much prep-work is involved? Will you need to apply multiple coats of paint? No matter how extensive the work will be, a professional can easily handle all of it.